A shot fired at a residence on Grace Street in Hannibal Tuesday morning was likely a retaliatory act, according to police.

Police were notified at approximately 10:15 a.m. that a black male had fired a shot at a residence on Grace Street. No one was injured in the incident. According to an early report a 9 mm handgun had been used.

The suspect, along with another man, had reportedly left the area on foot. A short time later, two men were seen being detained by Hannibal police officers in a parking lot at Grand Avenue and Broadway. Within a few minutes, however, the men were released in part because neither man was in possession of a handgun.

At the time, police officers were also conducting an investigation on Grace Street. According to Police Chief Lyndell Davis officers "found what appeared to be a single round from what we believe to be a pistol had been fired into the residence."

Davis says the shooting was apparently not a random act.

"From further investigation it appeared there was an earlier altercation, an assault at another location, and the shot into the house was a retaliatory act by friends or associates of the person who had been assaulted earlier in the day," he said. "The victims and suspects were all known to each other."

According to Davis, police have not closed the book on the incident.

"We're actively investigating this and still sorting it out," he said.